From: Jens Axboe <jaxboe@fusionio.com>
Date: Wed, 4 Aug 2010 11:34:31 +0000 (+0200)
Subject: writeback: fix bad _bh spinlock nesting
X-Git-Tag: v2.6.36-rc1~288^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6bf05d03ea8d00bb53e0642f94a5a6815be2edb6;p=pandora-kernel.git

writeback: fix bad _bh spinlock nesting

Fix a bug where a lock is _bh nested within another _bh lock,
but forgets to use the _bh variant for unlock.

Further more, it's not necessary to test _bh locks, the inner lock
can just use spin_lock(). So fix up the bug by making that change.

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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